Combustion baffle-plate.



G.4 W. COEN COMBUSION BAFFLE PLATE.

APPLICATION FILED DEC. 26. |916.

m m m m m um W T m A 2 w 2. ...I1 m Wb M W m wf@ d W. L 2 N m r .m u m P m GRNET W. COEN, OF SAN FRANCISCG, CALIFORNIA.

COMBUSTION BAFFLE-PLATE Specieation of Letters Patent.

Patented lFcb. 26, lld.

Application tiled December 26, 1916. Serial No. 138,806.

To all whom it muy concern Be itknown that I, GARNET W'. Conn, a citizen of the United States, residing at the city and county of San Francisco and State of California, have invented new and useful Improvements in Combustion Battle- Plates, of which the following is a specication.

This invention relates to combustion baiie plates for oil or as tired boiler furnaces.

Many. steaniships are being constructed wherein it is required that the boiler furnaces be so arranged that either oil or coal fuel may be used and that a minimum amount of time, labor and expense shall be expended in altering the furnaces, when changing from one fuel to the other.

In the installing of fuel oil burning systems in steamships equipped with boilers of the Scotch marine type, it has usually been the custom to build up a brick arch baille ring iii the mouth of the furnaces for the purpose of directing the incoming coinbustion'air into the atomized oil spray, thereby causing the two elements to mix thoroughly at the front end of the furnace so as to create an early combustion of the fuel when ignited. In the ease of a steainsliip where it is desirable to use oil fuel part of the time and coal fuel at other times, the above furnace arrangement is impractical, inasmuch as it would be necessary to tear out the brick Vrings in order to prepare the furnaces for coal firing, and when changing back to oil fuel these brick rings would have to be built in again. .This would necessitate always maintaining a supply of lire brick on hand,

as new brick would have to be employed whenever a change was made. This would also entail considerable time, labor and expense.

One of the objects of the present invention is to provide a sectional baliie ring of metal which will perform the duties of the above mentioned brick ring, and which is so constructed that it can be easily and quickly installed or removed from the furnace with the minimum expenditure of time, labor and expense. Another object of the invention is to provide a battle ring of the character described that will be self-supporting when assembled in the furnace. Another object is to provide means whereby the sections of this baffle ring may be spread apart so as to accommodate furnaces of dilfereiit dianie ters. 1

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure l is a front view of a furnace plate such as is employed on a boiler of the Scotch marine type.

Fig. 2 is a central, longitudinal section through the forward end of the boiler and plate.

Fig. 3 is a front view of the throat plate.

Fig. a is a section on line l--a of Fig. 3.

Fig. 5 is a front view of the segmentalshaped, over-lapping combustion battle plates.

Fig. G is a section on line 66 of Fig. 5.

Fig. 7 is a front view of the throat plate, showing the segmental plates in position.

Referring to the drawings infdetail, A and B indicate, respectively, the upper and lower halves of a furnace plate such as is employed on a boiler of the Scotch marine type, and 2 the forward end of the cylindrical, corrugated furnace box. The lower half B of the furnace plate is hingedly secured to the upper half, as at 3, to permit it to serve as an ash door when the boiler is burning coal, while the upper half A is bolted to the front of the boiler, as indicated at 4. The lower half .is in this instance provided with a door 5 hingedly secured, as at (i, which may be opened to any desired position and secured in said position by means of a chain 7 and a. hook 8 to permit the admission of air when the furnace is employing an oil burner, such as indicated at 9.

This burner 9 extends through and is secured in a door 10 which is pivotally mounted, as at ll, in projecting lugs l2 formed on the upper half of the furnace front, and this door carries a second door 13 on its inner side which is pivotally mounted, as at 14, in lugs l5. This door may open in wardly to permit the admission of air to the upper half of the furnace box; the opening of said door being regulated by means of a chain 1G in a manner similar to the lower door 5.

Adapted to be secured in the furnace box proper, interiorly of the main furnace front, consisting of the plates A and B, is

a combustion baffle plate generally indicated at C. This plate consists of a throat plate 1T in which is formed a central opening 18. Formed on the inner face of said plate is an annular, inwardly extending, outwardly flaring flange 19 which surrounds the cen'- tral opening 18, and formed onthe opposite face of the plate 17 is 'a plurality of 5 radially disposed lugs 20 in which are lftiriiied :oblong slots 21.

Adapted to be secured to the throat plate, by means of the lugs 20, is a plurality of ise'gmental combustionbaflie1plates22. :Each

l foftlie'selplates' isprovided with an linwardly extending lug`23 vwhich alines with the .lugs '520,-and ai bolt extending through sai'dlu'gs permits each 4plategto b efsecured `to tl'ie throat fplate 5 the oblong `.slots 121 provided 'l5 vpermitting .radialv adjustment teitlier iii. an inward4 oran outward direction to allow {'tlie *outer nperiphery ofthe .segmental plates to tvthe interior of the furnace box. corrugated, cylindrical form of fire box l1s 'in this` instaiicefideal for tbeV reception 0f a coiiibii'stion baflie plate constructed as here sl'iown,`a`s eachl 'corrugationjforins an annu- Ylarf'seat into which the youter periphery of the segmental plates may extend. Each :al-

tern'atefs'eginental'plate is permitted to foverlap'the adjacent plate,'shown at 24, 'and each 'ofs'aid plates is in turn proyi'ded'with Afoi'i'tivardly extending cooling ribs 25, the

v`'function of which will hereinafter be described.

11n actualpracti'ce, referringto Fig. 2, it Will'be' Yseen that" the combustion baffle plate "C asf-a whole'divides the lire-box into aV forward air chamber'D and a lcoi'nbustion cliamber'E. Thespace between thefurfinaeemfrontjproper and the plate C'olepends l"entirely -upon local conditions and may,

' "therefore, be increased or "decreased "as con- ?"ditinsfii'iay require. The centrall opening f 18 permits tlieatomiied oil; from' the Vburner "i9 "to 'fefely discharge' 'into the combustion liamberujintliedirection indicated, and'as i -irt'isadiifit'ted through'tlielower door 5 `TVaiid'the upper door 13 Vanid'eal ldistribution suflicientlycool to prevent overheating ,and'buijning, and as all the air admitted "to/'the (':Qinbusftion chamber must pass by A the'iinwardly"extending flange y19, Lit is obv vioustliat this iszalso kept sufficiently cool l-to prevent burning'of A they metal at'lthis 1 Anothery important advantage obtained "where a'i'eoiibustionxbaflie)plate suclfas" here 60f shown"'is'eniployed is'that" `it permits the perd'oor, a throat witli-a'cential opening and exterior lugs, and radially disposed seg- V'niental'ba'flie plates radially ustable upon 's'aid lugs.

air to be, directed and broughtin contact f-Kwith theincoming atom'i'zedn oilV practically "at""the tip of theA burner, 4in' this manner permitting the fire toburn from one end of the furnace to the other.

"ispermittedgthatis,equal amounts of".air vmayjbe 'admitted 'both above andbe- In the case of a Steamship where it is desired vto use oil fiiel 4part of the time and coal fuel at other times, a combustion baille plate of the type here shownis of great importance as it can be quickly removed or replaced whenever desired without necessitatinga complete cooling down of the boiler. It also eliminates the tearing down or rebuilding of brick rings, and as the ,plate "is 'at all timesmaintained compara- -tivelyfcool 'by the iiicom'in' air, lit is vobvious'gtliat its -life and usefulness are unlimited. The insertion ofgrate bars, when j l wishituiiderstood that various changes l.

inthe form,proportions and minor details of constructionmay be resorted to `within the 'scope Vof the appended claims and that I do not wish to limit myself to the specific design and construction here shown.

having thus ldescribed my invention, what 'l'elaim anddesire to secure` byLettei-s Patent is-`- 1.'n a boiler of thev character described, a twoLpart furnace front, the' upper portion of which is fixed and the lower portion hinged and having a Ysupplemental door 'hinged thereto, lugs upon the fixed portion,

a fdoor* hinged-'toppen about the lugs, and a burner carried Vby' s'aiddoor.

12.y In aboiler ofthe character described,v

-a'fi-irnace Yfront 'eonsistingof'a fixed upper fportion, hinged f 'lower 'poi'tioinfV a door V4liiingetl to theyupi'iei fixed' portion' to open v5`o`iitwardly, a.bu1ner' tube' fixed to 1 and movfa'ble with saiddooiga'second doorli'iiigedto 45A and of air with the :incoming la'tom- 'if tlielirst"door to-open inwardly, and means to limit the opening of said door.

L*3; The vcoii'ibiiiatioii with'va furnace of the #characterdescribed, of a baille plate having a central throat piece and means to secure said 1`3late'iv1thin'the furnace, said means y'coml'oi'i'sihg" segmental plates'carried by said throat' p`ie'ce,`and"means toradally adjust said 'plates' about said throat piece to bring them into engagement with'the wall of the furnace.

'43 In' aboiler furnace of the character described,-' a' furn'ace front with upper and lower 'independently adjustable `draft doors,

a burnerfixed in conjunctionwith 'the up- 5. A boiler furnace fire box having a corrugated periphery forming a succession of llr annular seats, in combination with segmental batlie plates, the outer peripheries of which engage and are secured in an annular seat.`

6. A cylindrical corrugated fire boX having circular baille plates formed of segments with projecting lugs and an open central throat with lugs having radial slots upon which the baille segments are adjustable.

'7. A boiler furnace including a cylindrical corrugated shell, a baffle plate formed of circular segments, concentric cooling ribs projecting therefrom, and a throat with lugs upon which the segments are adjustably mounted to engage with the corrugated shell at different points and vary the size of the draft chamber between the baiile plate and the furnace front.

8. The combination with a furnace having an air inlet chamber and a combustion chamber, of means to vary the relative proportions of said air inlet chamber and said combustion chamber, said means comprising a baille plate having a central throat, peripheral supports for said plate within the furnace and at various distances from the front thereof, and means to adjust the periphery of said plate to bring said periphery into engagement with any one of s aid supports.

9. A boiler furnace having a front with a fixed upper segment and a lower segment hinged thereto, an outwardly opening draft door on the lower segment, a door pivotally mounted upon the fixed upper segment, and a burner lixed thereto, a draft. door upon this door above the burner, an open throat through which the burner discharges, surrounding` segmental baille plates, and means to adjust said plates and vary the space between them and the furnace front.

10. The combination with a cylindrical fire boX, of a circular baffle plate comprising an open central throat, and concentrically disposed segmental plates radially adjustable about said throat to vary the perimeter of said baille plate.

1l. The combination with a cylindrical lire box, of a circular baiile plate comprising an open central throat, and concentrically disposed segmental plates radially adjustable about said throat to bring the outer peripheries of said segmental plates into engagement with the interior of the fire box.

In testimony whereof I have hereunto set my hand 1n the presence of two subscribing witnesses.

' GARNET W. CUEN. Witnesses lV. W. HEALEY, M. E. Ewnm.

topics ol" this patent may be obtained for ve cents each. by addressing the Gommissloner of Patente,

Washington, D. C. 

